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Residential Mortgage Servicing Rights (Key Assumptions Used In Measuring The Fair Value Of MSR) (Details)
9 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Transfers and Servicing [Abstract]    
Constant prepayment rate 13.69% 12.39%
Discount rate 9.19% 9.17%
Weighted average life (years) 5 years 11 months 4 days 6 years 5 months